On Tue, 17 Jul 2007, Ingo Molnar wrote: > > i've got a new observation: changing CONFIG_HZ from 250 to 1000 makes > the problem go away. So it's somehow also related to jiffies.
No, I suspect it's just related to timing: you need to hit that window when the LIST_FROZEN bit is set, and since it was so reliable for you before (and others didn't see it), your timing probably happened to hit it exactly. And changing HZ probably just changed some timeout or softirq getting called, and you didn't hit the bug any more. Linus - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/